From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Goryachev Subject: Re: Help needed: array inactive after grow attempt Date: Fri, 29 Apr 2016 08:43:59 +1000 Message-ID: <5722922F.3060209@websitemanagers.com.au> References: <1d5a8c36a6802a9e7e32eb056165f200@spoilbase.eu> <7cfbdd22b8c20acdb95fababfa1a04a6@spoilbase.eu> <57228AD7.1050408@youngman.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <57228AD7.1050408@youngman.org.uk> Sender: linux-raid-owner@vger.kernel.org To: Andread Mayrhoff , linux-raid@vger.kernel.org List-Id: linux-raid.ids On 29/04/16 08:12, Wols Lists wrote: > On 28/04/16 20:50, Andread Mayrhoff wrote: >> I might add >> >> ~/tmp # mdadm --stop /dev/md127 >> mdadm: stopped /dev/md127 >> ~/tmp # mdadm --assemble --scan >> mdadm: Failed to restore critical section for reshape, sorry. >> Possibly you needed to specify the --backup-file >> >> Thanks for helping me out of this... > Have you got the latest mdadm? See the "stuck reshape operation" thread > for details. > > You could also try adding the --invalid-backup option to mdadm. It > shouldn't need a backup if you're adding more disk, though, so that > looks slightly odd to me. > > Beyond those tips I'll not stray - my raid-fu is not the best and while > I'm confident of this information I don't believe in encouraging others > to take risks. If those don't work I'll let a better expert than me > chime in. > > Cheers, > Wol My suggestion (which isn't really a fix) is to take a quick look at disk overlays, that will allow you to "play" with your disks without damaging them, and retaining the ability to recover your data. Once you do that, I think I've seen people use a combination of --invalid-backup and --force to solve this kind of problem. The interesting part would be to know if the reshape ever actually started/made progress. Usually people are reporting that it sits on 0% complete. Hope that helps. Regards, Adam -- Adam Goryachev Website Managers www.websitemanagers.com.au